Sources of particulate-matter air pollution and its oxidative potential in Europe

Daellenbach, Kaspar R.; Uzu, Gaëlle; Jiang, Jianhui; Cassagnes, Laure-Estelle; Leni, Zaira; Vlachou, Athanasia; Stefenelli, Giulia; Canonaco, Francesco; Weber, Samuël; Segers, Arjo; Kuenen, Jeroen J. P.; Schaap, Martijn; Favez, Olivier; Albinet, Alexandre; Aksoyoglu, Sebnem; Dommen, Josef; Baltensperger, Urs; Geiser, Marianne; El Haddad, Imad; Jaffrezo, Jean-Luc; ... (2020). Sources of particulate-matter air pollution and its oxidative potential in Europe. Nature, 587(7834), pp. 414-419. Springer Nature 10.1038/s41586-020-2902-8

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Particulate matter is a component of ambient air pollution that has been linked to millions of annual premature deaths globally [1,2,3]. Assessments of the chronic and acute effects of particulate matter on human health tend to be based on mass concentration, with particle size and composition also thought to play a part [4]. Oxidative potential has been suggested to be one of the many possible drivers of the acute health effects of particulate matter, but the link remains uncertain [5,6,7,8]. Studies investigating the particulate-matter components that manifest an oxidative activity have yielded conflicting results [7]. In consequence, there is still much to be learned about the sources of particulate matter that may control the oxidative potential concentration [7]. Here we use field observations and air-quality modelling to quantify the major primary and secondary sources of particulate matter and of oxidative potential in Europe. We find that secondary inorganic components, crustal material and secondary biogenic organic aerosols control the mass concentration of particulate matter. By contrast, oxidative potential concentration is associated mostly with anthropogenic sources, in particular with fine-mode secondary organic aerosols largely from residential biomass burning and coarse-mode metals from vehicular non-exhaust emissions. Our results suggest that mitigation strategies aimed at reducing the mass concentrations of particulate matter alone may not reduce the oxidative potential concentration. If the oxidative potential can be linked to major health impacts, it may be more effective to control specific sources of particulate matter rather than overall particulate mass.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Anatomy

UniBE Contributor:

Leni, Zaira and Geiser, Marianne

Subjects:

500 Science > 540 Chemistry
600 Technology > 610 Medicine & health

ISSN:

1476-4687

Publisher:

Springer Nature

Funders:

[4] Swiss National Science Foundation

Language:

English

Submitter:

Marianne Geiser Kamber

Date Deposited:

08 Dec 2020 09:11

Last Modified:

08 Dec 2020 09:11

Publisher DOI:

10.1038/s41586-020-2902-8

PubMed ID:

33208962

BORIS DOI:

10.7892/boris.148550

URI:

https://boris.unibe.ch/id/eprint/148550

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